Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
Question 1. Choose ONE appropriate question in the box to each paragraph below:
1/ How do industry and transport cause pollution?
2/ How can I help?
3/ What is the pollution?
4/ How can industry help?
5/ What cause pollution?
6/ What about air pollution?
A. _3__ Pollution is the poisoning of the land, sea and air.
B. __5_ Mainly industry and transport. If you go to any city, you will see too many
factories, too many cars with not enough people in them, and not enough public transport.
C. __1_ Factories and vehicles produce waste which goes into the air and rivers and
spreads all over the land. Poisons in the waste build up over the years and harm trees,
plants, animals, and people.
D. _6__ Waste gases build up in the air, and dissolve into raindrops, forming a weak
acid. This "acid rain" can fall far away from the country which produced it, killing trees in
forests and fish in lakes and rivers.
E. _4__ If companies clean their waste gases before releasing them into the
atmosphere, there'll be much less air pollution and no acid rain. But this can be expensive
and it needs all the world's companies to do it.
F. _2__ Cars pollute the atmosphere. Walk, cycle and use public transport as much as
possible. Only use your car when you really need to, and use unleaded petrol if you can -
lead is one of the most dangerous ingredients in petrol. Join us, and help us to campaign for
cleaner air for everybody.
![](https://rs.olm.vn/images/avt/0.png?1311)
Choose the best answer for each of the following sentences.
1. In my experiments, the liquid is cooled to 32oF. It always freezes.
A. If you cool the liquid to 32 degrees, it froze.
B. If you cooled the liquid to 32 degrees, it would freeze.
C. If you cool the liquid to 32 degrees, it will freeze.
D. If you had cooled the liquid to 32 degrees, it would have frozen.
2. It may rain this afternoon. I hope it doesn't because I don't want the match to be cancelled.
A. If it rains, the match is cancelled.
B. If it rains, the match will be cancelled.
C. If it rained, the match would be cancelled.
D. If it had rained, the match would have been cancelled.
3. Unfortunately, I don't know Philosophy, so I can't answer your question.
A. If I know Philosophy, I can answer your question.
B. If I know Philosophy, I will be able to answer your question.
C. If I knew Philosophy, I would be able to answer your question.
D. If I had known Philosophy, I would have been able to answer your question.
4. ______ there are some more ideas, we can end the meeting now.
A. If
B. As if
C. Unless
D. In case
5. If he ______ with us now, he _____ the beauty of nature of the National Park.
A. is / can enjoy
B. was / will enjoy
C. has been / would enjoy
D. were / could enjoy
6. If they had searched more carefully, they _____ the watch sooner.
A. will find
B. would find
C. found
D. would have found
7. If I had got up early, I _______ to have breakfast now.
A. have
B. had
C. would have
D. would have had
8. I cannot buy a new computer ____ I save enough money.
A. if
B. even if
C. unless
D. as if
9. Most people you meet will be polite to you ______ .
A. if you are polite to them
B. if you will be polite to them
C. unless you are polite to them
D. if you were polite to them
10. If you do so, it _____ the matter worse.
A. makes only
B. would only make
C. will only make
D. had only made
11. You ______ English fluently unless you practice it every day.
A. will speak
B. will not speak
C. can speak
D. did not speak
12. Hurry up ______ you will miss the bus and be late for school.
A. if
B. and
C. or
D. as
13. You will get a good seat if you ______ first.
A. come
B. came
C. have come
D. will come
14. Sam will not graduate _______ .
A. if he passed all the tests
B. if he does not pass all the tests
C. unless he passes all the tests
D. unless he had passed all the tests
![](https://rs.olm.vn/images/avt/0.png?1311)
II. Choose the word which has the underlined part pronounced differently from the rest.
Question 6. A. recycle B. medical C. chemical D. athle
Question 7. A. pollute B. botanic C. contaminate D. economy
Question 8. A. into B. history C. tiny D. disease
III. Choose the word which is stressed differently from the rest.
Question 9. A. national B. grammaal C. medical D. chemical
Question 10. A. athle B. historic C. drama D. classic
Question 11. A. scientifically B. economic C. artis D. scientific
IV. Choose the correct answer to complete each sentence.
Question 12. Water pollution can put negative __________ on our health.
A. contamination B. affects C. effects D. problems
Question 13. A: How can light pollution __________ animals?
B: It can make animals change their behavior patterns.
A. cause B. make C. affect D. lead
Question 14. The dove is a universal __________ of peace.
A. symbolizing B. symbolize C. symbolic D. symbol
Question 15. The city has an atmosphere which is quite __________. You will never feel that in other
places.
A. important B. normal C. unique D. common
Question 16. __________ about the storm that stroke Hanoi last night?
A. Did you hear B. Do you heard C. Have you hear D. Did you heard
Question 17. Many people __________ because of the earthquake last week.
A. did injure B. injured C. have injured D. were injured
Question 18. When I looked at the river, I knew it __________ for a long time.
A. had contaminated B. had been contaminated
C. was contaminated D. contaminated
Question 19. All flights to Ha Noi had to be cancelled __________ the storm.
A. as a result B. due to C. because D. so
Question 20. When we were young, we __________ in the river near our home.
A. used to swim B. have swum C. had swum D. were swimming
V. Find a mistake in each sentence.
Question 21. My father worked (A) in a noisy factory for (B) a long time, since (C) he suffered from hearing
loss (D).
Question 22. The River Thames flows (A) through southern (B) England and connect (C) London with (D)
the sea.
Question 23. Much (A) of the town was reconstruct (B) after (C) the tornado (D).
Question 24. Look at (A) those (B) grey clouds! It will (C) rain soon (D).
Question 25. Students might (A) only use the (B) laboratory once (C) a (D) week.
![](https://rs.olm.vn/images/avt/0.png?1311)
Identify which one of the underlined parts of the following sentences is incorrect, then correct the mistake
0. Do you think friends are necessary for us or it’s only a waste of times to have friends.
Example: 0. ( a waste of time)
1. I wish my relative don’t => didn't live too far from me
2. Would you mind if I take=> took some photos on the way to the city center.
3. What is impressed=> impressed you most at the exhibition you went to last Sunday.
4. They never understand what their teacher says, don’t => do they.
5. The stamp collector said he was collecting stamps because he would=> will attend a stamp contest next year.
6. If there will be=> is too much exhausted fume in the air, our breath will be badly affected.
7. By whom was the famous song “white Christmas” write?=> written
Identify which one of the underlined parts of the following sentences is incorrect, then correct the mistake
0. Do you think friends are necessary for us or it’s only a waste of times to have friends.
Example: 0. ( a waste of time)
1. I wish my relative don’t (wouldn't) live too far from me
2. Would you mind if I take (took) some photos on the way to the city center.
3. What is impressed you most at the exhibition you went to last Sunday.
4. They never understand what their teacher says, don’t (do) they.
5. The stamp collector said he was collecting stamps because he would (will) attend a stamp contest next year.
6. If there will be (are) too much exhausted fume in the air, our breath will be badly affected.
7. By whom was the famous song “white Christmas” write (writed)?
![](https://rs.olm.vn/images/avt/0.png?1311)
1.What would happen if water pollution stopped?
2.Would we be happy if air pollution in the world were a better place?
3.If there were no pollution,would the world be a better place?
4.If I were you,I would take these bottles to the bottle bank.
5. If people didn't really care about the environment, they wouldn't try to save it.
6.The river wouldn't be so polluted if the factories didn't dump the waste into it.
7.We would be less worried if oil spills didn't have such destructive effects.
8.If we destroy the ozone layer, what would save us from the UV rays?
![](https://rs.olm.vn/images/avt/0.png?1311)
1. If I had wings, I wuoldn't have to...
2. we 'll have to go without John if he doesn't arrive soon
3. How would you feel if you...
4. .................. If you visit Mexico
5. .................... If you weren't be so unfriendly
1 if i HAVE wings , i WON'T HAVE TO take an air plane to fly home
2 we'll have to go without John if he DOESN'T ARRIVE soon
3 how WOULD YOU FEEL if you were in my position
4 will you send me a postcard if you VISIT Mexico ?
5 you would have a lot of friends if you WEREN'T so friendly
1.waste
2. clean
Question : If you follow these simple rules, not only will you (save) money, but also the environment will be cleaner. *
earn
count
waste
replace
Question : If the air wasn't (dirty), I wouldn't sneeze so much. *
polluted
clean
nasty
dusty